Best Email Deliverability Software

Email deliverability software helps businesses monitor and optimize email campaigns to improve their inbox placement and reputation among recipients. These tools are advantageous within marketing and sales strategies, increasing open rates and conversion opportunities by ensuring emails bypass spam folders and are strategically composed to be perceived as legitimate. Email deliverability tools are used primarily by email marketers or organizational teams involved with sending bulk emails to contact lists and leads. Successful use of these tools can put valuable content or sales opportunities in front of more subscribers and help prevent emails from getting lost in the shuffle or tagged as spam.

Email deliverability software often integrates with email marketing software, and a number of products in the Email Marketing category include features related to email delivery and inbox placement. These tools may similarly function in tandem with marketing automation software. Email deliverability software may offer features related to DMARC software to help ensure emails and email accounts are authenticated to avoid imposter activity that could cause flagging and poor inbox placement. Email deliverability platforms may also integrate with or offer features of email tracking software to monitor email performance, such as open rates, processing time, and email delivery latency.

To qualify for inclusion in the Email Deliverability category, a product must:

SendinBlue empowers businesses to build and grow relationships through automation, marketing and transactional emails, and SMS messages.
Over 60,000 customers around the world choose SendinBlue because we offer competitive pricing, active customer support, and an all-in-one solution for marketing automation, email marketing, SMS marketing, and sending transactional messages via email and SMS.
Many leading apps, ecommerce platforms, and CMS tools integrate directly with SendinBlue including: WordPress, Magento, Drupal, Shopify, PrestaShop, WooCommerce, Zapier, OptinMonster, and more. Our robust API also gives you the power to create custom integrations via a variety of popular programming languages.
SendinBlue pricing is based on the number of email messages sent, rather than the number of contacts you keep in your account. SendinBlue offers free accounts that allow you to send up to 300 emails per day (9,000 emails per month) 100% free. As your business grows, you can upgrade to a plan that meets your needs without breaking the bank. Send up to 120,000 emails per month for just $66 -- or send even more emails at low prices. Learn more about our paid plans, pay-as-you-go options and pricing for SMS credits here: www.sendinblue.com/pricing.

SendGrid makes it simple and stress-free to communicate with your customers. Our technology and expertise helps senders save time, scale their business, and succeed in an ever-changing email landscape. We are trusted by over 80,000 customers globally - big and small - to send over 45 billion emails every month.
We help developers send with confidence by providing:
FAST AND FRIENDLY INTEGRATION
SendGrid's optimized integration tools and standardized API were built by developers for developers to make integrating with SendGrid a breeze. Interactive API reference, open source libraries in 7 languages, and clear setup flow help you get your first email out in 5 minutes or less. SendGrid's RESTful APIs are built on HTTP and return JSON for straightforward implementation.
DELIVERY AND SCALE YOU CAN TRUST
SendGrid provides powerful performance to accomplish your goals—proven at scale for senders like Uber. With 99.95% platform and API uptime, we’re available when they need us. Processing over 45 billion emails every month, our custom MTA can support your growth. We help optimize your email delivery by maintaining relationships with key email ecosystem influencers, and providing key delivery tools.
TOOLS AND INSIGHTS TO EMPOWER YOU
Know more about your sending and safely share your SendGrid account so you don’t have to waste time pulling data and putting out fires. Use SendGrid email templates and review stats in the UI to easily collaborate with your team. Maintain delivery visibility and troubleshoot with ease with our enhanced email activity feed.
HELP WHEN YOU NEED IT
When the unavoidable problem strikes, we’re your partner in getting your program back where you need it. Our 24/7 technical Support Team is knowledgeable and on-call to help, or solve it yourself with concise how-to content in the SendGrid Knowledge Center. Whether you want help optimizing your initial implementation, a quick one-time consultation, or ongoing advice, our expert services are here to optimize your email program.

Simplify the way that you drive customers engagement and achieve your business goals with SendGrid Marketing Campaigns!
Enjoy powerful, yet straightforward segmentation, flexible and frustration-free campaign editing, and actionable analytics—all powered by the leading email service provider trusted by over 80,000 customers globally, including Airbnb, Spotify and Uber.
We help marketers like you send with confidence by providing:
:: FLEXIBILITY TO WORK YOUR WAY
Our campaign building process is free from frustrating, rigid step-by-step wizards that slow you down. Choose-your-path editing options save you time, whether you prefer code, design or a mix of both. The result? More time to focus on what matters most to your marketing goals.
:: EASY, HIGH-IMPACT SEGMENTATION & PERSONALIZATION
Sending relevant, personalized email that drives results is easier than ever. Our intuitive, clean UI makes it clear who you’re targeting, and personalizing campaign subject lines and content is as easy as dreaming up the custom fields you want to import.
:: ACCESSIBLE, ACTIONABLE ANALYTICS
Make smart, data-driven decisions without getting lost in data overload. We bring the most important campaign stats front and center so you can quickly gauge performance and iterate When it’s time to dig deeper, take advantage of robust email activity data, inbox and geography insights and more.
:: PROVEN DELIVERABILITY, SCALE & SUPPORT
Choosing Marketing Campaigns means choosing the proven scale, deliverability and expertise of SendGrid. Getting your messages to the inbox is at the core of everything we do; it’s why we’re trusted by today’s fastest growing brands. 24/7 support and access to expert onboarding and deliverability services means never having to go it alone.

Return Path is the world’s leading email data solutions provider. Every minute of every day, our clients and partners trust our data and insights to help them build closer, safer, and smarter relationships with their customers.
Our solutions provide the insight companies need to build better relationships, drive more response, and increase revenue.
Through the Return Path Data Exchange, we’ve brought together the world’s most comprehensive source of data from the email ecosystem. We partner with more than 70 providers of mailbox and security solutions, covering 2.5 billion inboxes—approximately 70 percent of the worldwide total. Also feeding into this data platform is our consumer network of more than 2 million consumers and purchase receipts from 5,000 retailers around the world, delivering unparalleled insight into purchase behavior, brand affinity, and consumer preferences.
Return Path was founded in 1999. Headquartered in New York, we have offices in Denver, Sunnyvale, Austin, Indianapolis, Toronto, London, Paris, Munich, Hamburg, Sydney, and Sao Paulo.

SparkPost is the world’s #1 email infrastructure provider and the most performant email delivery service available. Our customers send over 5 trillion messages a year, over 37 percent of the world’s business email. Several SparkPost customers—including the largest social networks—send over a billion emails a day, making us the fastest-growing email delivery service provider on the market.
For more than a decade, we’ve developed the leading technology in the email industry and the first email delivery service truly architected for the cloud. From the finely-tuned Momentum MTA to today’s fully elastic cloud email delivery service, we provide our customers with proven highest inbox delivery rates, easy setup and launch, and the most comprehensive analytics and insight. Built on the AWS platform, we give our customers the reliability and scalability they demand—and more. There’s never been a better way to send email.
Our technology is powerful, but SparkPost’s most valuable asset is our people—the most talented and experienced email experts in the industry. From deliverability experts to a community of developers to dedicated Technical Account Managers for enterprise customers, our team is there with you every step of the way.
Whether you are just starting out building an app; a large, complex enterprise; or somewhere in between, there’s a SparkPost service to match your email delivery needs.

MailUp is a simple and scalable solution to create, automate and customize Email, SMS and Messaging Apps Marketing campaigns. Trusted by 11,000+ customers worldwide, it offers advanced automation features and best-of-breed technology for your marketing strategies.
Advanced Marketing Automation features, bespoke consultancy, training resources, and solid expertise. MailUp offers companies and agencies everything they need to shape effective Email, SMS and Messaging Apps Marketing strategies.
Try its drag & drop email builder, integrate your marketing stack, create automated multichannel workflows in a matter of seconds and monitor your campaign performances through in-depth reports.
Italian by birth, international by vocation. Established in 2003, over the years MailUp has grown to become the market leader in Italy and to operate in over 50 countries, with 5 branches worldwide. Over 11,000 companies across the globe trust MailUp as a strategic partner for their Digital Marketing activities.
Mailup offers:
- A complete solution for multichannel marketing needs: newsletters, transactional emails, promotions, SMS, social media and Messaging Apps (Facebook Messenger and Telegram)
- An experienced team at your service to build a bespoke solution for your needs
- The peace of mind of relying on Italy's #1 solution
MailUp offers the best infrastructure and international certifications to ensure maximum deliverability to your messages. Its powerful messaging platform is complemented by a range of tools to help your day-to-day marketing campaigns run smoothly. Its teams at the technology hubs in Cremona and Silicon Valley are at the forefront of flexible, scalable, integrated software development.

eDataSource is the premier source of email performance insights and deliverability technology. eDataSource pioneered the use of live consumer inboxes to analyze email success metrics. This behavior-based approach continues to be the gold-standard in email analysis, far outpacing seed-based methods in accuracy, scale, and richness of data. With an organically-grown panel of 3 million real consumer inboxes, eDataSource tracks over 60 million emails daily across 190,000 brands. This leading-edge technology empowers marketers with the deepest, most precise, and easily accessible information to improve critical success metrics of their email marketing programs. eDataSource provides tools and services for the world's leading brands, agencies, and service providers.

Email on Acid is an email QA platform that streamlines the email testing process. Our robust features help email marketers and developers save time and send more polished emails, so they can improve email marketing ROI.
Our features include email previews on 70+ email clients, Spam Testing, Advanced Analytics, and an Email Editor. Our new Campaign Precheck also features HTML spell check, accessibility testing, image optimization, preheader preview, URL and UTM validation. Now you can find and fix errors in your email even if you don't know HTML!

The company is dedicated to the science of deliverability; the largest, and yet most often-overlooked, barrier to conversion.. emails not reaching inboxes.
SendForensics is the most advanced email deliverability system in the world. For the first time, deliverability can be accurately measured and optimised down to the individual components of an email’s content and infrastructure, regardless of sending-platform.
Trusted by responsible senders worldwide.

Email is what we do. Making sure your message gets delivered is our top priority.
Here at SocketLabs, we’ve perfected the art and science of easy, reliable delivery for your emails. Regardless of the size or nature of your business, we have a plan that will meet all of your email needs. You want simplicity? Well, we’ve struck just the right balance between a feature-rich outgoing mail server delivery solution, an easy-to-use dashboard interface, and an even easier setup. You can be set up and running in minutes.
Outgoing mail servers, advanced analytics, and top notch customer support are all part of the SocketLabs experience.
Our products and services insure that you can:
- Use our outgoing mail servers to avoid the spam filter
- Gain greater insight into how your email is performing
- Rely on knowledgeable staff to resolve issues
- Save money by using our reliable infrastructure
- Capture and store email in a secure database
With over 15 years of experience, we know how to get emails delivered right – and reliably – each and every time. Our proven strategies and outgoing mail server technology help you send marketing, transactional, or person-to-person emails with ease.

Litmus is the easiest way for teams to create great email for every subscriber, everywhere. Litmus is an email creation, testing, and analytics platform that empowers marketers and designers to confidently deliver superior customer experiences.

SMTP’s relay service infrastructure can solve your delivery issues — quickly. We maximize the number of emails that reach recipients’ inboxes by using our own IP addresses and monitoring your emails for anti-SPAM compliance. By improving your deliverability you’ll see improved ROI. Engagement rates will increase and you can use your resources more efficiently - to get the highest return on every marketing dollar you spend.
To ensure the best deliverability, our Responsive Delivery system constantly monitors bounce rates and adjusts the parameters of your email delivery to ensure that your bounce and complaint rates stay at a minimum.
SMTP’s relay services are as easy to use as they are effective. Our cloud-based service for email delivery enables you to easily begin using the service without the need for additional hardware or software.You control all aspects of your sending and can review your campaign statistics through your dashboard.
With SMTP's Relay Services, you get:
-Superior deliverability: Our experts closely examine your unique needs and serve as your guide and “interpreter” for ISPs that may be blocking your delivery.
-FREE 24/7 support: You have unlimited access to phone, chat and email support, and a dedicated team of specialists will work to ensure all your service needs are met.
-No contract: You can sign up month to month and try out our service. Our terms are highly flexible, so you can downgrade or upgrade your account anytime at no risk.
Relay Service Features:
-White-listed IP addresses
-Email authentication
-Proactive monitoring systems
-ISP feedback loops
-Shared or dedicated IP addresses
-Email delivery rates consistently in the 90th percentile
-Robust analytics and reporting
-Email delivery statistics, including bounce rates & delivery confirmation
-Flexible API: Integration for IT and Developers
SMTP’s cloud-based service also includes an SMTP API, enabling IT professionals and developers to easily integrate web applications based upon the cloud platforms.

WhatCounts is an email service provider helping you send what counts with an amazing platform and full-service agency to back it up. We partner with companies to drive more revenue by leveraging our savvy email experts and a sophisticated email marketing platform. We provide data management, software, and services to marketers seeking to deliver smart personalized digital messages to their target audiences.
The WhatCounts team works hard to make sure your subscribers always receive meaningful messages.